classodbc_1_1_database_meta_data.html.svn-base

絲路server源碼 Silk Road server source

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          <td class="md" nowrap valign="top"> bool odbc::DatabaseMetaData::deletesAreDetected </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">int&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp; <em>type</em>          </td>
          <td class="md" valign="top">)&nbsp;</td>
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<p>
Returns true if a deleted row can be detected with <a class="el" href="classodbc_1_1_result_set.html#a23">ResultSet::rowDeleted</a>().
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Parameters: </b><dd>
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<tr><td valign=top><em>type</em>&nbsp;</td><td>
The type of <a class="el" href="classodbc_1_1_result_set.html">ResultSet</a> of interest </td></tr>
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<a name="a143" doxytag="odbc::DatabaseMetaData::getBestRowIdentifier"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classodbc_1_1_result_set.html">ResultSet</a>* odbc::DatabaseMetaData::getBestRowIdentifier </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">const std::string &amp;&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>catalog</em>, </td>
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          <td class="md" nowrap>const std::string &amp;&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>schema</em>, </td>
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          <td class="md" nowrap>const std::string &amp;&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>table</em>, </td>
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          <td class="md" nowrap>int&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>scope</em>, </td>
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          <td class="md" nowrap>bool&nbsp;</td>
          <td class="mdname" nowrap>&nbsp; <em>nullable</em></td>
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          <td class="md">)&nbsp;</td>
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<p>
Returns the optimal set of columns that identifies a row.
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The returned <a class="el" href="classodbc_1_1_result_set.html">ResultSet</a> is ordered by <code>SCOPE</code> and has the following columns: <ol>
<li><b>SCOPE</b> - short - scope of this result: <ul>
<li><code>bestRowTemporary</code> - temporary, only while a <a class="el" href="classodbc_1_1_result_set.html">ResultSet</a> is using the row <li><code>bestRowTransaction</code> - valid until the current transaction ends <li><code>bestRowSession</code> - valid through the whole session - until the connection is closed </ul>
<li><b>COLUMN_NAME</b> - string - the column name <li><b>DATA_TYPE</b> - short - the type of the column from <a class="el" href="structodbc_1_1_types.html">Types</a> <li><b>TYPE_NAME</b> - string - native type name (data source dependent) <li><b>COLUMN_SIZE</b> - int - the size (precision) of the column. <li><b>BUFFER_LENGTH</b> - int - unused <li><b>DECIMAL_DIGITS</b> - short - scale if applicable. Can be <code>NULL</code>. <li><b>PSEUDO_COLUMN</b> - short - whether this is a pseudo column: <ul>
<li><code>bestRowUnknown</code> - it is unknown whether this is a pseudo column <li><code>bestRowNotPseudo</code> - it is definitely not a pseudo column <li><code>bestRowPseudo</code> - it is definitely a pseudo column </ul>
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Parameters: </b><dd>
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<tr><td valign=top><em>catalog</em>&nbsp;</td><td>
the catalog name </td></tr>
<tr><td valign=top><em>schema</em>&nbsp;</td><td>
the schema name </td></tr>
<tr><td valign=top><em>table</em>&nbsp;</td><td>
the table name </td></tr>
<tr><td valign=top><em>scope</em>&nbsp;</td><td>
the scope of interest, same values as the <b>SCOPE</b> column. </td></tr>
<tr><td valign=top><em>nullable</em>&nbsp;</td><td>
whether nullable columns should be included </td></tr>
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<a name="a147" doxytag="odbc::DatabaseMetaData::getCatalogs"></a><p>
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          <td class="md" nowrap valign="top"> <a class="el" href="classodbc_1_1_result_set.html">ResultSet</a>* odbc::DatabaseMetaData::getCatalogs </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>&nbsp;          </td>
          <td class="md" valign="top">)&nbsp;</td>
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<p>
Returns a list of available catalogs in the database.
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The returned <a class="el" href="classodbc_1_1_result_set.html">ResultSet</a> is the same as with <a class="el" href="classodbc_1_1_database_meta_data.html#a133">getTables</a>(), except that all columns but <b>TABLE_CAT</